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8667950 Oil-less rotary engine  
Method and apparatus for oil-less engine with a revolving rotor are shown. Oil-less engine allows manufacturers to build environmentally safer oil-free engines, with fewer engine parts and at...
8668480 Pre-pressurization pump liner for vane pump  
A vane liner for use in a vane pump has a vane liner body defining an inner bore for providing a cam surface in a vane pump. The cam surface has a suction opening formed through the body at one...
8668481 Pump assembly, in particular for helicopter lubrication  
A pump assembly, in particular for lubrication in helicopters, has a casing, the lateral wall of which defines an intake port and a delivery port; and the casing houses two rotary pumps powered by...
8668040 Supercharger-equipped internal combustion engine for saddle-ride type vehicle  
An internal combustion engine for a vehicle can include a crankcase, and a supercharger disposed behind the crankcase in a front-to-rear direction of the vehicle body. A throttle body and an...
8668478 Compressor having a shutdown valve  
A scroll compressor includes a discharge valve assembly having a valve member, a valve stop supported within the compressor shell and including an aperture there through and a communication member....
8662870 Integrated pump for compressible fluids  
A swash pump for compressible fluids uses sealing contacts made between the nutatable swash plate and the fixed cone plates to center and locate the inner swash sphere which slides against two...
8662869 Multi-stage dry pump  
A multi-stage dry pump includes: a plurality of pump chambers each including a cylinder and a rotor housed in the cylinder; a first rotor shaft that is a rotation shaft of the rotors; a fixed...
8662052 Rotary piston internal combustion engine power unit  
A power unit (14) which has a spark-ignition engine unit (1) of the Wankel type including a three flanked rotary piston (R) mounted on an eccentric shaft (63) rotating eccentrically within a cavity...
8657014 Artificial lift system and method for well  
An artificial lift system provides a lifting mechanism located in a well. The lifting mechanism communicates with a remote intake that is located below in the well. A compressed gas source provides...
8657592 Pumping apparatus with a hollow shaft acting as a valve  
A pumping apparatus includes a pump housing, a pumping member which is rotatable in the housing to pump fluid, the pumping member being provided on a support which is in use, driven, the housing...
8656888 Rotary internal combustion engine with variable volumetric compression ratio  
A method and apparatus for controlling an air input in a rotary engine, including selectively controlling inlet ports communicating with an internal combustion cavity of the engine, the ports...
8651844 Hybrid pump for delivering a liquid pump medium  
The invention relates to a hybrid pump for delivering a liquid pump medium, comprising a rotor consisting of substantially non-elastic plastic, which is situated in the pump chamber and can rotate...
8651842 Scroll compressor with opening/closing mechanism for the back pressure space  
A scroll compressor includes a high-pressure space capable of communicating with a discharge port and a back pressure space capable of communicating with an intermediate port. A fluid passage...
8651833 Combined gas and liquid pump  
The present invention provides a combined gas and liquid pump (46) for an internal combustion engine (10). The pump (46) includes a casing (58) having a cavity (60) containing a rotor (62) and a...
8651843 High efficiency fixed displacement vane pump  
A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque...
8651841 Rotary compressor with improved connection  
Disclosed is a rotary compressor in which a connecting protrusion is formed at an inner circumferential surface of a vane chamber in which a connection tube is inserted, so as to increase a sealing...
8651839 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Oil free screw compressor
 
A multi-stage oil-free screw compressor includes: a suction throttle valve for controlling air intake into the compressor; a piston assembly for operating the suction throttle valve; and a...
8651177 Long-lasting hydraulic seals for smart shuttles, for coiled tubing injectors, and for pipeline pigs  
A well conveyance apparatus for conveying equipment into a wellbore possessing long-lasting movable and slidable hydraulic seals against the interior of a borehole casing located within a wellbore...
8651825 Variable capacity vane pump with dual control chambers  
A variable capacity vane includes a pump control ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressures. The...
8647088 Rotary engine valving apparatus and method of operation therefor  
A rotary engine is described including: (1) a rotor located within a housing, the rotor configured with a plurality of rotor vane slots; (2) a vane separating an interior space between the rotor...
8649954 System for controlling the angular position of stator blades and method for optimizing said angular position  
A system for controlling angular position of stator blades including: a mechanism for calculating a set angular position of the blades according to one of speeds; and a module for correcting the...
8647086 Enclosed compressor  
An enclosed compressor includes a compression element configured to compress a working fluid, a casing and a fixing member. The casing has a substantially cylindrical shell plate and houses the...
8646274 Toroidal motor  
The present invention provides for a toroidal motor comprising a centrally located output shaft, a circular plate centrally and transversely affixed to the output shaft, a toroidal cylinder located...
8647085 Scroll fluid machine having a communication passage between an inner periphery of lip seal and an outer periphery of drive shaft or ring  
A scroll fluid machine with ensured reliability of an oil seal and a bearing even in a compressor operation at high rpm and high load is provided, which includes: a fixed scroll; an orbiting scroll...
8647087 Cooling system for gerotor motor  
A hydraulic motor having a cooling system includes a stator, a rotor that rotates and orbits in the stator, a drive link connected to the rotor, and a housing connected with the stator. The housing...
8647089 Dual rotor pump  
A pump includes a pump body defining first and second cavities. First and second rotors are disposed in the first and second cavities between an inlet passage and an outlet passage and are in...
8647084 Cylinder dividing mechanism of a pneumatic tool  
In a cylinder dividing mechanism of a pneumatic tool, the first and second air pressure driving spaces are formed in the chamber, the first and second external channels are set externally on the...
8641393 Thermally compensated scroll machine  
A compressor may include first and second scroll members and a compensation member. The first scroll member may include a first end plate and a first spiral wrap extending therefrom. The second...
8641392 Scroll compressor bodies with scroll tip seals and extended thrust region  
A scroll compressor includes scroll compressor bodies with axial tip seals projecting from the respective scroll ribs of fixed and movable scroll compressor bodies. An extended thrust region is...
8641394 Compressor  
A compressor is configured to compress a refrigerant and use a lubricating oil. The compressor includes a compression mechanism configured to compress the refrigerant, a driving shaft configured to...
8641395 Compressor  
A system is provided for controlling the balance piston pressure in a screw compressor. The system can use the slide valve of the compressor as a valve to control the flow of fluid from a fluid...
8636480 Compressor  
A compressor is provided that includes a hermetically sealed container; a stator fixedly installed within the hermetically sealed container; a first rotary member that rotates, within the stator,...
8636488 Hydraulic motor or pump  
A hydraulic motor or pump (2) that generates a relatively high torque, and further allows an unprecedented high specific displacement that makes the motor suitable yaw motor for large wind turbines...
8636487 Dual stage pump having intermittent mid-shift load supports  
A hydraulic pump is disclosed. The hydraulic pump may have a first fluid section (12), a second fluid section (14), and an input shaft (16) extending through the first fluid section and the second...
8636485 Electroformed stator tube for a progressing cavity apparatus  
A method for use in producing a stator for a progressing cavity apparatus which includes the use of electroforming to produce the stator tube. A stator tube for a progressing cavity apparatus which...
8636486 Accurate powder metal component, assembly and method  
The invention provides an accurate powder metal component having a body with opposed surfaces at least one of which has at least one projection of smaller cross-sectional area than the main portion...
8632324 Optimized helix angle rotors for roots-style supercharger  
A Roots-type blower has first and second meshed, lobed rotors disposed in first and second chambers of a housing. Each lobe has first and second axially facing end surfaces defining a twist angle...
8632321 Fully submerged integrated electric oil pump  
A submersible electric pump includes a housing adapted to be submerged within a fluid to be pumped having apertures extending therethrough. An electric motor stator is positioned within the housing...
8632323 Internal gear pump rotor, and internal gear pump using the rotor  
A gear pump rotor is provided including a combination of an inner rotor and an outer rotor whose numbers of teeth are different by one, and the discharge amount of the pump is increased by an...
8628306 Helium enclosed compressor  
Helium enclosed compressor. A compressor and a motor section with stator having coil ends and a rotor, are housed within an enclosed vessel partitioned into discharge and motor chambers by a frame....
8628312 Compressor including anti-rotation washer and method of assembly  
A compressor may include a shell, a housing fixed within the shell, first and second scroll members disposed within the shell, a sleeve guide, a fastener, and a washer. The first scroll member may...
8628313 Scroll fluid machine with a coating layer  
A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer...
8628314 Scroll compressor including a communication section between the suction chamber and the supply flow path  
A scroll compressor includes a housing; a fixed scroll fixed in the housing; an orbiting scroll that has an orbiting end plate on which a spiral orbiting wall is provided upright and that is...
8628315 Fluid machine  
Intended is to provide a fluid machine that can prevent wear of a rotation preventing pin. The fluid machine includes a housing, a fixed scroll fixed with respect to the housing, a turning scroll...
8628316 Compressor having capacity modulation system  
A compressor includes a housing, a first scroll member, a second scroll member and a modulation assembly. The first scroll member includes a first end plate having a discharge passage, a first...
8628317 Vacuum pump with an axial oil feed conduit  
A vacuum pump (10) suitable for mounting at a lower region of an engine such as in the oil sump of an engine. The vacuum pump (10) includes a casing (12) having a cavity (14) containing a movable...
8622717 High-performance oil pump  
A high-performance oil pump for pumping oil in an internal combustion engine that eliminates or greatly reduces cavitation in the oil pump, thereby increasing the efficiency and performance of the...
8622724 Scroll pump with isolation barrier  
Scroll pumping apparatus includes a first scroll element and a second scroll element; a drive mechanism operatively coupled to the second scroll element for producing orbiting motion of the second...
8622689 Rotor drive mechanism and pump apparatus  
A rotor drive mechanism and pump apparatus according to the present invention may cause an external screw type rotor of a uniaxial eccentric screw pump to rotate and carry out a revolution...
8622723 Scroll compressor  
A scroll compressor includes first and second scroll members housed in a casing. The first scroll member has a fluid inlet and a first through hole spaced from the fluid inlet. A fluid introducing...